This is awesome, thanks for all the background info. Now let me give you an example of App Engine deprecating stuff:

- In 2012 App Engine deprecated the "Conversion API".

- They notified this deprecation in August 2012, and they told users it would stop working only 3 months afterwards.

- You were affected by this deprecation.

- You created an alternative to it, that worked on Heroku.

Source: https://groups.google.com/g/google-appengine/c/-JJccGx5RRk/m...

Did I get this right?

You are awesome. We are just choosing to remember the past with different colored glasses.